Amana 5 Flashes Error Code
Flame sensed with no call for heat — a short to ground in the flame sense circuit.
Source: Amana/Amana_2021F_InstallationGuide_HVAC_EN.pdf
What does Amana 5 Flashes mean?
Five red flashes mean the control detected flame when there was no call for heat. As a safety response, the induced draft blower and circulation blower run continuously with no furnace operation. The fault almost always traces to a short to ground in the flame sense circuit or in the flame sensor wiring, which makes the control read flame that is not actually present.
Symptoms
- Induced draft blower and circulation blower run continuously
- No furnace operation
- Integrated control module diagnostic LED flashes five red flashes
- Control reports flame with no active heating cycle
Common causes
- Flame sensed with no call for heat
- Short to ground in the flame sense circuit
- Short in the flame sensor wiring
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Diagnostic steps
Inspect the flame sense circuit
Inspect the flame sense circuit and flame sensor wiring for a short to ground.
Correct the short
Correct the short at the flame sensor or in the flame sensor wiring so the control no longer reads false flame.
Verify the sensor and wiring
Confirm the flame sensor and its wiring are properly routed and not contacting ground after the repair.
Power off before servicing
Turn power off prior to repair before handling the flame sensor or its wiring.
When to call a professional
A flame-sensed-with-no-call fault is a safety condition: the control believes gas may be burning when it should not be. If you cannot safely locate and correct a short to ground in the flame sense circuit, call a qualified servicer rather than running the furnace. Work only with power off, and do not defeat the control's safety response while diagnosing the wiring.
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Other Amana Error Codes
System lockout from too many failed ignition retries — the furnace could not establish or hold flame.
Pressure switch circuit is closed when it should be open — the induced draft blower is not operating.
Pressure switch circuit is not closing while the induced draft blower runs — restricted airflow or a faulty switch.
Primary or auxiliary limit circuit is open — the furnace is overheating from insufficient airflow.
Rollout limit open or the integrated control module fuse is blown — possible flame rollout.
Flame sense microamp signal is low — a coated, oxidized, or misaligned flame sensor.
Igniter relay fault — wiring, igniter, grounding, or control module problem.
Twinning fault — twinned furnaces are not wired or relayed together correctly.
Open fuse / no 24V power to the integrated control module — often from a voltage surge.
Igniter open — broken igniter, bad wiring, or poor grounding.
Inducer relay fault — inducer wiring, blockage, grounding, or control module problem.
Reversed polarity of 115V or 24V power to the furnace or control module.